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(No Mom.) 2 sheetssheet 1.

. E. P. BAVILLE. Y

MACHINE FOR 'TURNING BOLTS.

Patented Apr. 1,9, 1887.

N. PETERS. Pnnln-Lixhegmpher, washington. D. C.

(No Model.) 2 SheetS-Shet 2. E. P. BAVILLE` MACHINE POR TURNING BOLTS.

No. 361,571. Patented Apr. 19, 1887.

AUNITED STATES PATENT (NEIGE.

EDMOND PIERRE BAVILLE, OF BRUSSELS,BELGIU1VI, ASSIGNOR TO JULIEN PONTY, OF SAME PLACE, AND HENRY HOVARD, OF COVENTRY, R. I.

MACHINE FOR TURNING `BOLTS.

SPECIFICATION forming part of Letters Patent No. 361,571, dated April 19, 1887.

Application tiled October Q7, 1886. Serial No. 217.319. (No model.)

.To all whom it may concern:

Be it known that I, EDMOND PIERRE BA- vILLE, of Brussels, in the Kingdom of Belgium, have invented certain new and useful Improvements in Machines for Turning Bolts, of which the following is a specification.

This invention consists in certain features of novelty, which are particularly pointed out in the claims, being first fully described with reference to the accompanying drawings, in which- Figure l is a view showing the greater portion of the machine in elevation, the cutterheads being shown in vertical section. Fig. 2 is a View showing the machine in front elevation. Fig. 3 is a view showing in detail the automatic unclutehing mechanism. Fig. 4 is a plan view of the table or bed ofthe machine and of the uppermost cutter head secured thereto. Fig. 5 is an axial section of one of the cutterheads on a larger scale.l Fig. 6 is a plan view of the same. Fig. 7 is a section showing in detail the method of securing the cutting-tools in place. Fig. 8 is an axial section of portions of several cutter-heads having axial perforations for centering the bolt (shown in elevation) and supporting it against the strain of the cutters.

T his invention relates, first, to means for securing the several cutters within their respective heads; secondly, to the means for supporting a number of separate and distinct cutterheads'in such manner that tlieend of the blank as it protrudes from one cutter-headcemes into position to be operated upon by the next, and so on in succession until it has reached the last cutter-head of the series, when it willbein such position as to be acted upon by all of them slmultaneously; thirdly, to the means for centering the bolt and sustaining it against ilexure from the strain put upon it by the several sets of cutters; and, lastly, to the means for revolving the bolt, feeding it forward to the eutters, withdrawing it when the cutting has been completed, stopping the machine for removing the completed bolt and replacing a fresh blank, and other details, which will appear hereinafter.

S0 far as the means for holding the cuttingtools and centering the bolt are concerned, all

A represents a plate or disk which consti- Y tutes the body ofthe eutterhead, and from the upper side of which projects a hub or boss, A', both the disk and the hub being perforated, as at x, for the passage of the blank b. is provided on its upper side with a number of grooves or slots corresponding to the number of cutters which it is desired to employ, said slots being slightly tangential with respect to the eye :c ofthe disk and hub, as seen in Figp, and inclined relative to the axis of the said eye, as seen in Fig. 7.' In each of theseslots is placedaeutter,B,whichis clamped and held firmly by a set-screw, B', the head of which fits in a notch or recess formed in the periphery of the hub A. The working extremities of these cutters project into the eye of the hub, the stem of the blank being turned down by slowly inserting it between the extremit-ies of said cutters and revolving it by mechanism hereinafter described.

On the under side of the plate A of the upper cutter-head are formed any desired number of bosses or projections A, each of which is formed with a screw-th readed socket for engaging the correspondiugly-screW-threaded end of a stem, D, as shown in Fig. 5, or these sockets may extend completely through said plate, as shown in Fig. 1, the object in either case being simply to support said stems and hold them iirmly in positions parallel to the axis of the eye x. The plate A of each of the other cutter-heads is correspondingly perforated, (the perforations being without screwthreads) the stems being passed through said perforations, and the several cutter-heads secured at the desired distances asunder by means of clamping-screws C. The cutters in the successive cutter-heads approach closer and closer to the axis of the eye x, so as to produce shoulders on the stem of the bolt, as shown in Fig. 8, the cutters in the last cutter-head being made to extend entirely to the said axis, and shaped so as to give the extremity of the stem the desired rounded shape, as shown in Fig. 1.

In order to sustain the stem of the bolt against the strain to which it is necessarily This hub IOO subjected, the eye through each plate A is made of conical shape for the reception of a bushingsleeve, a, whose exterior is of a corresponding conical shape, and whose interior is cylindrical and of such size as to fit snugly that portion of the stem which was reduced in size by the cutters carried by the plate in which said sleeve is fitted, as illustrated in Fig. 8. The boltb is supported, fed forward to the cutters, and revolved by the mechanism now to be described.

The frame of the machine consists of a base, F, and a heavy arm, G, rising from the t-able E, in' which the upper cutter-head is secured. Projecting from the arm G are two horizontal bracket-arms, H H', which are provided with concentric perforations for receiving and guiding a cylindrical spindle, X, the lower end of which is provided with a head or chuck, z', so constructed as to receive the head of the bolt to be turned, and made removable, so as to be replaced by others adapted to receive boltheads of any particular construction. This spindle passes through an eye formed through a beveled pinion, l, to which it is secured by a spline and groove, so as to be capable of moving freely longitudinally independently of said1 pinion, but incapable of independent rotary motion. Gearing with the pinion I is a similar pinion, l', secured to one extremity of ashaft, U, suitablyjournaled near one end in the arm G and near the other in a bracketarm, G', fixed removably thereto by means of bolts. Journaled loosely upon this shaft is a band-pulley, K, to which is applied the power for driving the entire machine, said pulley having xed thereto or formed therewith one half, lc, of a clutch, the outer half, 7c', of.

which is xed to the shaft U by a spline and groove, as shown in Fig. 8, so as to render the two incapable of independent rotation, but enable the one to move freely upon the other in a longitudinal direction. By thismeans it will be seen that when the two members of the clutch are in engagement with each other the spindle X will be rotated in its bearings, it being at the same time moved downward by the mechanism now .to be described.

T is a horizontal lever fulcrumed to the top ofthe arm G of the frame of the machine,and connected with a swivel, X", turning in the top of the spindle X, through the medium of a link, X'.

l To depress the spindle X, the end of the lever to which it is connectedis depressed, for which purpose it is connected by a link, S', to the upper extremity of a raclrbar, S, which latter is maintained in vertical position and guided in its movement by brackets P' P", its teeth being engaged by the teeth of a small pinion (shown by dotted lines only in Fig. l) fixed to a shaft, Q', turning in bearings in suitable brackets projecting from the frame of the inachine. Fixed to this shaft Q', by a spline and groove in the ordinary way, is one half, Q,.of a clutch, the other half of which is fixed to or formed integrally with a worm-wheel, O,

journaled loosely upon said shaft and engaged by a worm, N', on one end of a shaft, N, the other end of which shaft is connected by a universal joint,N", to a short shaft, M, turning in a bearing, M', andcarrying a pulley-wheel,L', which is driven by a belt or cord, L", from a pulley-wheel, L, secured to the shaft U, al,

ready referred to. By this means it will be seen that when the two members of the clutch O Q' are in engagement the shaftQ will be ro tated, thereby causing the rack-bar S, and consequently the spindle X, to descend. Vhen the two members of this clutch are not in engagement-,said shaft may be turned in either direction by means of a hand-wheel, B, secured to it, whereby the rack-bar S may be raised or lowered for bringing the parts to operative position much'faster than itis raised or lowered by the worm-gear, the latter being intended more especially for slowly feeding the bolt to the cutters.

For automatically arresting the descent of the spindle X when it has reached the limit which it is desired to put upon its downward movement,a finger or roller, s, carried by the rack-bar S, comes in contact with the upper inclined end of a lever, m, which is pivoted to a suitable fixed bracket and provided with toes for entering the circumferential groove in the sliding member of the clutch O Q', whereby shaft Qis freed from the influence of the wormgear and permitted to turn freely in its bearings in either direction. A counter weight, T', secured to the lever T, then causes said lever to rock on its fulcrum, elevating the rod S and spindle X. As the weighted end of this lever descends it comes against a block, Z', secured adjustably to a rod, Z, which latter works at its upper part through an eye formed vin the end of a pin, t, swiveled to the lever T, and is connected at its lower extremity by a link, V', to the vertical arm of the frame. This link is of such length .and is so situated as to rest constantly against the upper inclined end of a lever, V, which lever is fulcrumed to a bracket, g, projecting from the army G of the frame, and is bifurcated at its lower end and occupies the circumferential groove in the sliding sleevek ofthe clutch, already referred to. By this means the descent of the weighted end of the lever is made to stop the entire machine. Vhen the new blank has been placed in the chuck t', the handwheel B is turned to lower the rod S, which will elevate the weighted endof the lever T and free the clutch-leverVfrom its constraint. The sliding member 7c' of the clutch is then forced into engagement with the loose member by a spring, o, contained in a socketin the arm G, and bearing outward against a shoulder formed on a-pin, o', which latter bears against the lever V.

Having described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

1. The combination, with the spindle of a metal-turning machine, of a series of cutter- IOO IIO

to which said pinion is secured, the hand- I heads, the cutters of one head being projected closer to the axis of said spindle than the cutters of the next adjacent head, substantially as set forth.

2. The combination, With the spindle X and the series of cutters so arranged as to successively reduce the stem of the bolt, of the plates to which the said cutters are secured, havin-g eyes or perforations successively decreasing in size, in the manner and for the purpose set forth.

3. The combination, with the spindle and the upper cutter-head having the sockets, substantially as described, of the pins D, secured in said sockets, and thelower cutter-heads perforated for the passage of said pins and provided with clamping-screws, substantially as set forth.

4. The combination, with the spindle of a metal-turning machine and means for turning it, of a lever with which it has swivel connection, a rack-bar connected to said lever, apinion gearing with said rack-bar, a shaft to which said pinion is secured, and a wheel for turning said shaft, substantially as set forth. 5. The combination, with the spindle X and means for rotating it, of thelever T,with which it has swivel connection, a counter-balance, a rackbar, S, connected to said lever, a pinion gearing with said rack-bar, a drive-wheel, a clutch for connecting said drive -wheel and pinion, and a trip on the rack-bar for shifting the clutch, substantially as set forth.

6. The combination, with the spindle, a lever-to which it is connected, and a counterbalance for elevating said spindle, of suitable gearing .for rotating said spindle, a clutch connecting said gearing with the driving-gear, and a trip actuated by the lever when moved by the counter-balance for disconnecting said clutch, substantially as set forth.

7. The combination, with the spindleX and means for rotating it, of the counter-balanced lever T, to which it is connected, the rack-bar S, also connected to said lever, the pinion gearing with said 1'ack-bar, the' driver member O of the clutch, the sliding member Q, the operating-lever m, and the trip s, all constructed and arranged to operate substantially as set forth.

8. The combination, with the spindle and rack-bar having suitable connections, compelling them to rise and fall in unison, of the pinion gearing with said rack-bar, the shaft 361,571 l Il wheel R, and one member of the clutch, also secured to said shaft, and the other member of the clutch having means for driving it, substantially as set forth.

9. The combination, with the spindle, the gearing for driving it, the driving-pulley of the machine, and a clutch for connecting said pulley and driving-gear, of a counterbalancing device for elevating said spindle, and a trip operated by said counter-balance for shifting the clutch, substantially as set forth.

10. The combination, with the spindle X, the gear-wheel I,'connected thereto by spline and groove, the gear-wheel I', gearing with wheel I and secured to the shaft U, the sliding member It of the clutch, also secured to said shaft by spline and groove, the pulley K, and the other member, 7c, of the clutch secured thereto, of the spring-actuated lever V, the lever T, having connection with the spindle X, the weight T', secured to said lever, and the rod Z, depressed by said lever T and engaging the lever V, substantially as set forth.

ll. The combination, with the spindle X, the driving-gear,and the clutch for connecting said gear With the driving-pulley of the ma'- chine, of the Weighted lever T, the pin t, swiveled thereto, the rod Z, passing through an eye in said pin and having the block Z, the link V, connecting the lower end of the rod with the frame, and the spring-actuated lever V, all constructed and arranged to operate substantially as set forth.

12. The combination, with the spindle, means for depressing it, a trip for unclutching its feeding mechanism and arresting its descent, of a counter-balance for elevating it, a clutch for connecting the main driving-pulley with the Working-shaft of the machine, and a second trip actuated by said counterbalance for shifting said clutch and arresting the machine, substantially as set forth.

13. The combination, with the spindle, the shaft U, and suitable gearing between them, of the pulleys L L', belt L, shafts M and N, having the universal joint N, and mechanism for depressing said spindle actuated by the rotation of the shaft N, substantially as set forth.

In testimony whereof I have hereunto set my hand.

EDMON D PIERRE BAVILLE. Witnesses:

LoN DocoUinR, AUG. FonRIssnN.

IOO 

